Here is my DIY Lampshade soft box (who says they need be square?). I ripped the spider from the shade, and removed one leg, then mounted a 3/8in. lamp nipple to it. Zip-ties hold two legs of the spider to the top ring. The face is covered with a circle from the back of an old silk shirt using Velcro attached with an office stapler. It all mounts to a standard umbrella clamp.